Making Jet Fuel allows for making a good amount of caps and XP. With level 10 or higher Charisma one can produce 25 units with two shipments of fertilizer, one shipment of plastic, and 125 units of flamer fuel for 935 caps but will net 1,200 caps worth of Jet Fuel. Additionally each unit of jet and subsequently Jet Fuel produces between 15 and 20 XP, netting between 375 and 500 total XP.